340 camshaft break-in. Well.....almost

4spdragtop said

With retarded timing comes heat I believe. Too much gets detonation. That's why 2 or 3 pairs of experienced hands are good. One run throttle, one to run timing light and one to check for leaks and one to run camera lol. Get the rpms up as soon as safely possible in my opinion. Make a list!
Not sure how to check for rotation? After cam break in remove vc's and check? Maybe hit the lifters with a sharpie before break in and check after?

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Detonation is not usually an issue when breaking in a cam. No load on the engine.

Get it started as quickly as possible, no long crank times. That's usually a lack of fuel and not enough timing deal.
Up to rpm 2000rpm
Put timing light on it and get 36-40* of timing in it.
Adjust RPM up and down a little 2000-2500 works pretty good.

Have all the tools you need to do this set up BEFORE ever firing the engine

Then watch for Murphy to arrive! LOL Murphy's Law